Bicycle-padlock



UNITED STATES* PATENT OFFICE.

AUGUSTIN HUBERT, OFKBOSTON, `AMASSACHUSETTS.

BICYCLE-PAD Loc K.

SPECIFICATIONfcrming part of Letters Patentv No.V 511,430, dated December 26, 1893. Application led J' une 6, 1893. Serial No. 476,755. (No model.)

.To :LZ2/,whom it may concern:

Beit known Ithat I, AUcUsTiN HUBERT, a subject of the Queen of Great Britain, residing at Boston, in the county of Suolk and State of Massachusetts, have invented a new and useful Improvement in Bicycle-Padlocks, of which the following is a specication.

This lis a padlock especially ladapted and intended for use in securing one of the cranks of a bicycle to the frame or stationary portion of the machine, whereby the crank is prevented from revolving, and hence the machine is prevented from being trundled off or removed in any manner unless it is taken up bodily.

The nature of the invention is fully described below, and illustrated in the accompanying drawings, in which- Figure l is a side elevation of a portion of a bicycle with my padlock in position thereupon. Fig. 2 is a side elevation of my improved padlock closed. Fig. 3 is a similar view of the sameopen.

Similar letters of reference indicate corresponding parts.

' A represents a portion of one of the wheels of a bicycle. v

C is a portion of the driving chain, D E' portions of the frame or stationary part of the machine, and F the cranks actuated by the treadles F all constructed as usual.

My padlock is especially adapted to secure one of the cranks F to the portion;E of' the frame, such portion being usually circular in cross section.

H represents the case holding the lock, which is constructed in any well known manner, and h represents the key in position. The bow or hasp in a padlockis usually made in the form of a loop which is roughly on the lines of a half-circle.

In this invention, the bow or hasp is made in two 4parts. The partI is hinged at I to the case, and describes a double curve of approximately ogee shape, and its free end, I", is grooved preferably in a V shape. The part Kis similar in shape to the part I, and is pivoted centrally thereto at L, suitable depres-y sions Z being made in the parts'next the pivots for the sake of convenience. The outer or free end K of the partK is'preferably made in reverse V shape so as to t into the V shaped portion I of the part I. The inner endK is of suitable shape to engage a bolt in the lock. The parts I K are provided near their inner ends with inwardlyV projecting stops or buers P, as shown. A

`When thehasp is closed as shown in Fig. 2, the two parts constitute two loops, presenting the appearance of a figure 8. The outer loop, being nearly circular, clasps around the portion E of the frame, while the inner loop ineloses vthe crank F. When the hasp is closed, the parts P bear against eachother so that the severe strain which the hasp may have to sustain will not be communicated to .the lock, but will be sustained vby the hasp itself by means of these projections or bufvfers P, which essentially relieve the lock. The outer jaws, by means of the V shape above described, fit together'when closed,a'nd are thusvprevented from being bent or pulled apart laterally. The two loops, as will readily be seen, effectually prevent any material play of the crank, or movement, with relation to the frame E, in this respect possessing a decided advantage over a padlock Witha single loop or bow large enough to inclose both the crank and frame. Moreover, when the hasp is closed, it is practically one integral hasp, inasmuch as the parts P P and I K ltouch and it so that there can be no relative locked two closed loops of approximately the shape of a gure 8 adapted to inclose respectively a-'crank and a portion of the frame of the bicycle, substantially as set forth.

2. In combination, the doubly reverse curved portions I and K centrally hinged together at L as shown, said portions when each other when the liasp is closed, substan- Closed being` approximately theshape of a figtiftily as described.

ure 8 the portion I being hinged to the case f of the look` and the portion K engaging the AUGUSTIN HUBERF' 5 lock, the said portions I and K being pro- Witnesses;

vided near their inner ends with the two in- HENRY W. WILLIAMS,

Ward projections or buffers P bearing against J. M. HARTNETT. 

